rs232 through slip rings?
rs232 through slip rings?
(OP)
I have a Micrologix 1000 on the moving end of a crane. Power and discrete i/o are transmitted to/from the Micrologix through slip rings. Can I run 232 communication to the Micrologix through the slip rings?





RE: rs232 through slip rings?
Yes you probably could. However it might be more cost effective to use an unlicensed band data communications radio. These can be purchased for about $900 each or less. High quality slip rings could cost you more.
RE: rs232 through slip rings?
If the machine is moving during data transmission, I woul opt for a frequency hopping spread spectrum radio transmitter and receiver. This type of data transmission transmits data over multiple carriers on different frequencies. The first packet of data is transmitted over carrier one for example, the second data packet is transmitted over carrier 2 and so on. Best regards, PLCSAVVY
RE: rs232 through slip rings?
RE: rs232 through slip rings?
I have been working with some machines that are using slip rings to transmit data Whilst I have not investigated exactly what protocol it is I do know that it is very reliable & a critical part ot the process. The rotational speed is approx 20 rpm. The main plc siemens s700 communicates to a s400 on the wheel via these slip rings I suspect that the protocol is similar to AB DH+ on the rare ocation that comms is lost the machine intiates a shutdown process coasts to a halt where it waits for the operator to restart it. works a charm.
RE: rs232 through slip rings?
Try looking at the MDS Transnet radio, www.mdsroc.com.
This radio is small, power efficient, 900Mhz spread spectrum, and built for harsh environments.
RE: rs232 through slip rings?
RE: rs232 through slip rings?